ORS 73.0407¹

(1) "Alteration" means:

(a) An unauthorized change in an instrument that purports to modify in any respect the obligation of a party; or

(b) An unauthorized addition of words or numbers or other change to an incomplete instrument relating to the obligation of a party.

(2) Except as provided in subsection (3) of this section, an alteration fraudulently made discharges a party whose obligation is affected by the alteration unless that party assents or is precluded from asserting the alteration. No other alteration discharges a party, and the instrument may be enforced according to its original terms.

(3) A payor bank or drawee paying a fraudulently altered instrument or a person taking it for value or for collection, in good faith and without notice of the alteration, may enforce rights with respect to the instrument:

(a) According to its original terms; or

(b) In the case of an incomplete instrument altered by unauthorized completion, according to its terms as completed. [1993 c.545 §48]

1 Legislative Counsel Committee, CHAPTER 73—Negotiable Instruments, https://­www.­oregonlegislature.­gov/­bills_laws/­Archive/­2007ors73.­pdf (2007) (last ac­cessed Feb. 12, 2009).
2 OregonLaws.org contains the con­tents of Volume 21 of the ORS, inserted along­side the per­tin­ent statutes. See the preface to the ORS An­no­ta­tions for more information.
3 OregonLaws.org assembles these lists by analyzing references between Sections. Each listed item refers back to the current Section in its own text. The result reveals relationships in the code that may not have otherwise been apparent. Currency Information